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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>如何让一个块级元素水平居中</title>
<style type="text/css">
<!--
#layout {
 background-color: #CCCCCC;
 width:400px;
 height: 240px;
 text-align: center;
 margin:0 auto;
}
-->

table{border-collapse:collapse;border-spacing:0;border-left:1px solid #888;border-top:1px solid #888;background:#efefef;}
th,td{border-right:1px solid #888;border-bottom:1px solid #888;padding:5px 15px;}
th{font-weight:bold;background:#ccc;}
</style>
</head>
<body>
<table>
	<tr>
		<td>id</td>
		<td>名字</td>
	</tr>
	<tr>
		<td>12345678</td>
		<td>中国人</td>
	</tr>
</table>
</html>